Question
A and B can do a piece of work in 30 days and 40 days,
respectively. They began the work together but after a certain time, A leaves off and B completed the remaining work in 26 days. After how many days did A leave?Solution
Let, after x days A leave. Let the total work is the 120 units (LCM of 30 and 40) Efficiency of A is 120 / 30 = 4 units The efficiency of B is 120/40 = 3 units So, after x days they both work together. According to the question, (4+3) x x + 26 x 3 = 120 Â 7x + 78 = 120 7x = 42 Â x = 42/7 days =6 days.
- Where was the United Nations Ocean Conference held from 9 to 13 June 2025?
'Man -Yi' a super typhoon has hit which of these countries recently?
Nomadic Elephant 2025 was a joint military exercise between India and which country?
When is 'World Water Day' celebrated every year to highlight the importance of water?
The Olympic Winter Games 2026 would be played in_______.
Which payment bank encountered limitations from the Reserve Bank of India due to "Violation of regulatory standards and failure to comply"?
Pension Fund Regulatory and Development Authority (PFRDA) notified the new simplified Point of Presence (PoP) Regulations where banks and non-banks will...
Consider the following statements:
I. According to National Family Health Survey 5 the use of tobacco is higher in urban areas than in rural are...
Assertion (A): Cities generate about 66% of India's GDP and 90% of government income.
Reason (R): Urban local bodies (ULBs) receive less than 1% ...
India became the second country after which nation to implement an electronic personnel license for pilots?
Relevant for Exams:
